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<TITLE>80386 Programmer's Reference Manual -- Opcode SLDT</TITLE>
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<H1>SLDT -- Store Local Descriptor Table Register</H1>

<PRE>
Opcode      Instruction   Clocks      Description

0F  00 /0   SLDT r/m16    pm=2/2      Store LDTR to EA word
</PRE>

<H2>Operation</H2>

<PRE>
r/m16 := LDTR;
</PRE>

<H2>Description</H2>

SLDT stores the Local Descriptor Table Register (LDTR) in the two-byte
register or memory location indicated by the effective address operand.
This register is a selector that points into the Global Descriptor Table.
<P>
SLDT is used only in operating system software. It is not used in
application programs.

<H2>Flags Affected</H2>

None

<H2>Protected Mode Exceptions</H2>

#GP(0) if the result is in a nonwritable segment; #GP(0) for an illegal
memory operand effective address in the CS, DS, ES, FS, or GS segments;
#SS(0) for an illegal address in the SS segment; #PF(fault-code) for a page
fault

<H2>Real Address Mode Exceptions</H2>

Interrupt 6; SLDT is not recognized in Real Address Mode

<H2>Virtual 8086 Mode Exceptions</H2>

Same exceptions as in Real Address Mode; #PF(fault-code) for a page fault

<H2>Notes</H2>

The operand-size attribute has no effect on the operation of the
instruction.


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